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Contract OI history

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Oct 23, 2026 EXPIRATION

F $13.50 Put

F261023P00013500

Latest saved OI4Oct 23, 2026
Last change-211vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
F $13.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6423210 2026-10-02: 642 OI2026-10-05: 631 OI2026-10-06: 623 OI2026-10-07: 623 OI2026-10-08: 623 OI2026-10-09: 631 OI2026-10-13: 500 OI2026-10-14: 500 OI2026-10-15: 197 OI2026-10-16: 200 OI2026-10-21: 215 OI2026-10-23: 4 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

F contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4-211
Oct 21, 2026215+15
Oct 16, 2026200+3
Oct 15, 2026197-303
Oct 14, 20265000
Oct 13, 2026500-131
Oct 09, 2026631+8
Oct 08, 20266230
Oct 07, 20266230
Oct 06, 2026623-8
Oct 05, 2026631-11
Oct 02, 2026642No prior observation